Answer:
[tex]\frac{1}{x+3}[/tex]
Step-by-step explanation:
Firstly we will discuss about the Rational expression.
Rational expression is nothing but same as a fraction where numerator and denominator are polynomial.
For example:
[tex]\frac{x+5}{x-2},\frac{1}{x-6} etc[/tex]
Here rational expression in the given options
[tex]\frac{1}{x+3}[/tex]
That's the final answer.
I hope it will help you.
